The Effect of Priming Intravenous Rocuronium on Fentanyl-Induced Coughing

This study has been completed.

Sponsor:

Taichung Armed Forces General Hospital

ClinicalTrials.gov Identifier:

NCT01532466

First Posted: February 14, 2012

Last Update Posted: February 14, 2012

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Following the fentanyl injection, another anesthetist who was blind to the pretreatment recorded the number of coughs for 1 min. The severity of coughing was graded as mild (1-2 times), moderate (3-5 times), or severe (> 5 times) based on the number of coughs within the 1 min following the fentanyl injection. Assisted mask ventilation with oxygen was supplied if desaturation occurred (SpO2 < 90%).

All patients were given oxygen via a face mask. The patients were then administered with the following medications intravenously: the rocuronium group received rocuronium 0.06 mg kg-1 30 s before the injection of an IV fentanyl bolus (1.5 mcg kg-1, within 2 s).

Drug: Rocuronium

All patients were given oxygen via a face mask. The patients were then administered with the following medications intravenously: the rocuronium group received rocuronium 0.06 mg kg-1, and the control group received the same volume of normal saline 30 s before the injection of an IV fentanyl bolus (1.5 mcg kg-1, within 2 s).

No Intervention: Normal saline

All patients were given oxygen via a face mask. The patients were then administered with the following medications intravenously: the control group received the same volume of normal saline 30 s before the injection of an IV fentanyl bolus (1.5 mcg kg-1, within 2 s).

Detailed Description:

Fentanyl is widely used for analgesia and anesthesia because of its rapid onset, its intense analgesic effect, and is associated with lessened cardiovascular depression and low histamine release. Although the cough reflex is usually transient and self-limiting, it should be avoided in situations such as elevated intracranial, intraocular, or intra-abdominal pressure, and unstable hemodynamics.

The cause of FIC is unclear. One hypothesis is that vocal cord spasms might induce coughing because of fentanyl-induced muscle rigidity and histamine release. Muscle relaxants are commonly used to treat this condition. This study hypothesizes that priming muscle relaxants could prevent or suppress FIC. This study investigates whether the muscle relaxant rocuronium attenuates FIC effectively.

Eligibility

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Ages Eligible for Study:

18 Years to 80 Years (Adult, Senior)

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

260 ASA I-II patients,

aged between 18 and 80 years, and undergoing various elective surgeries at Taichung Armed Forces General Hospital.